Financial speculators have created a bubble in palladium that’s bad for the industry, according to MMC Norilsk Nickel PJSC, the world’s biggest producer of the metal. Nornickel is planning to take steps to ease market tightness by shifting sales to more investment-grade bars, instead of the powdered form used by industrial consumers, according to Anton Berlin, head of analysis and market development. He declined to provide exact figures of how many bars would be produced.